GCE driver should name the instance after the machine name

[proppy]

It would be nice if machine created with the GCE driver (and others) would be named (or even prefixed) after the machine name by default if no flag value for --google-instance-name is specified.

The current behavior is a bit confusing as machine will create multiple machine with the same underlying VM, if you don't specific --google-instance-name.

proppy@noir:~$ machine create --driver google --google-project proppy-stuff foo
proppy@noir:~$ machine create --driver google --google-project proppy-stuff bar
FATA[0004] Instance docker-machine already exists.
proppy@noir:~$ machine ls
NAME             ACTIVE   DRIVER   STATE     URL
bar              google   Running   tcp://130.211.144.5:2376
foo     *        google   Running   tcp://130.211.144.5:2376

Possibly related to #59 #219
/cc @dlorenc

[sthulb]

All machines will take the name from the command as the VM name in whatever account/hypervisor

[proppy]

@sthulb that doesn't seems to be the case right now, at least for GCE:
https://github.com/docker/machine/blob/master/drivers/google/google.go#L96

[sthulb]

Not right now. It's something I'm working on for #59

[ehazlett]

Closing as #59 will handle this (as @sthulb mentioned).